{"id":451049,"date":"2024-10-20T09:15:42","date_gmt":"2024-10-20T09:15:42","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-178722023\/"},"modified":"2024-10-26T17:15:34","modified_gmt":"2024-10-26T17:15:34","slug":"bs-en-178722023","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-178722023\/","title":{"rendered":"BS EN 17872:2023"},"content":{"rendered":"
This document specifies a procedure for artificial ageing of flexible underlays which are used under discontinuous roof coverings. This is achieved by exposing test samples to UV-radiation, elevated temperature in combination with high relative humidity and elevated temperature in combination with accelerated air-speed.<\/p>\n
PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
---|---|---|---|---|---|---|---|
2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
7<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions 4 Principle <\/td>\n<\/tr>\n | ||||||
8<\/td>\n | 5 Apparatus 5.1 Apparatus for exposure to UV-A irradiation and elevated temperature 5.2 Apparatus for exposure to elevated temperature in combination with high relative humidity 5.3 Apparatus for exposure to elevated temperature with accelerated air-speed (ventilated oven) <\/td>\n<\/tr>\n | ||||||
9<\/td>\n | 6 Preparation of test specimens 6.1 Dimensions of test specimens <\/td>\n<\/tr>\n | ||||||
10<\/td>\n | 6.2 Number of test specimens 6.3 Test specimen identification 7 Procedure 7.1 Exposure to UV irradiation and elevated temperature 7.2 Exposure to elevated temperature in combination with high relative humidity 7.3 Exposure to elevated temperature in combination with accelerated air-speed 7.4 Conditioning of test specimen before follow up testing 7.5 Follow-up testing <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | 8 Test report <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Flexible sheets for waterproofing. Underlays for discontinuous roof coverings. Artificial ageing procedure<\/b><\/p>\n |